Lorenzo a



UNITED STATES PATENT OFFICE.

LORENZO A. MURPHY AND ALEXANDER H. MILNE, OF WELLINGTON,

CANADA.

WINDOW.

SPECIFICATION forming part of Letters Patent No. 549,003, dated October 29, 1895.

Application filed December 15,1894. Serial No. 531,965. (No model.)

To @ZZ whom t may concern.-

Be it known that we, LORENZO A. MURPHY and ALEXANDER H. MILNE, of Wellington, in the Province of British Columbia and Dominion of Canada, have invented certain new and useful Improvements in Windows, of which the following is a full, clear, and exact description.

Our invention relates to improvements in windows, and has for its objects to provide an improved sash-balancing device, and in connection therewith to provide a novel draftclosing board, which will afford means to seal the window at its sill and permit the upper sash to be lowered slightly for ventilation of a room having the improved windows.

To these ends our invention consists in the peculiar construction and combination of parts as is hereinafter described, and indicated in the claim.

Reference is to be had to the accompanying drawings, forming a part of this specification, in which similar'figures of reference indicate corresponding parts in all the views.

Figure 1 is an inside elevation of a closed Window having the improvements, the casement of the window being broken away near the cap-piece of the window-frame to expose features of the improvement. Fig. 2 is a transverse sectional view on the line 2 2 in Fig. 1. Fig. 3 is a transverse sectional view of a window having the improvements, showing the sash in partly-opened condition. Fig.l 4 is an enlarged sectional side view of the upper portion of a window-easement having part of the improvements, taken on the line 4 4 in Fig. 5. Fig. 5 is a transverse sectional view of the details shown in Fig. 4, taken on the line 5 5 in said figure; and Fig. 6 is an enlarged transverse sectional view of the lower portion of the window-easement, the lower rail of the lower sash, and also of a novel draft-closing strip that is a part of the improvement.

The invention is adapted for use on any window having two sashes that are vertically slidable in a easement, and the most essential feature of the improvements consists in providing simple means for utilizing the weight of one sash to counterbalance the other sash.

Referring to the drawings, 10 represents a llocated on or in the stiles of the easement,

being introduced between the sashes to afford -a pair of separate channels at each side of the casement for the sashes to move in.

As before mentioned, the principal feature of improvement consists in the connection of the two sashes in a peculiar manner, so that one will counterpoise the other. The preferred means for effecting the counterbalance of one sash by the other consists, essentially, as follows: Two similar flexible metallic bands 16 are provided, these being thin strips parallel on the side edges and proportioned in length to the height of the sash which they are to connect and adapt f or mutual support.

- At each side of the window-casement near the cap-piece of the same a loose pulley 17 is held in place by the bracket-plate 18, whereon it is'pivoted, these pulleys and their bracketplates being located in the channels occupied by the lower sash 1l.

The bracket-plates 18 are, as shown in Figs. 4 and 5, L-shaped, being provided at their upper ends with angular projecting flanges 18a, provided with perforations to receive screws 18b, whereby said plates are held in place to the' upper part of the sash. The lower part of the body of each bracket-plate 18 is provided with a perforation to receive a screw 18, whereon the roller or pulley 17 is journaled, said screw extending into the side rail of the casing, as clearly seen in Fig. 4. In this way the bracket-plate 18 is secured in place by the screw 18b at its upper end, and the pulley 17 is journaled on screw 18,supported at its outer end in the bracket-plate and at its inner end in the side rail of the sash-frame.

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An aperture 15a is formed in each partingstrip 15 to permit the periphery of each pulley 17 to project through the aperture of an adjacent parting-strip, as is clearly shown in Fig. 5, the diameter of the pulley being equal to the distance between the front faces of the respective sashes of the window. The bands 16 are each designed to rest on one of the pulleys 17 intermediately of the ends of said bands, and, as is shown in Figs. 2 and 3, the ends of each band are respectively affixed to the inner or front surfaces of side bars ou the upper and lower sashes near the upper endsof said side bars, and as the said side, pieces of the sashes work between the bead-strips and parting-strip at each side of the easement it will be seen that the pliable metal bands 16 may be passed through the apertures 15 before both ends of the bands are secured on the sashes and `each band engage with the periphery of the nearest pulley 17.

For eicient operation the length of each band 16 must be so proportioned when attached to the sashes that the upper sash will be held completely elevated to impinge its upper edge against the cap-piece of the casement by the lower sash when it is resting on the sill of the easement, as is shown in Figs. 1 and 2. 1

When the bands 16 are correctly arranged in connection with the upper and lower sashes 11 12, as has been described, the weight of one sash will counterbalance the other sash, and a movement of either sash will be transmitted to the other one, s0 that the elevation of the lower sash will permit the gravity of the upper sash to depress it a corresponding degree.

As there is always a suiiticient space between the side rails of the sash and the'strips that support them on the easement sides for the reception and free reciprocation of the thin bands 16, it will be evident that the improvement may be readily applied to old windows without alteration and at a small cost, and thus by this inexpensive and practical improvement aord means for counterbalaneing sashes of windows that have not been counterbalanced before the application of this feature of the invention.

As it is frequently desirable to lower the upper sash of a window and retain the lower sash in a closed condition for the purpose of affording ventilation to the upper portion of a room, provision has been made for this purpose, which consists of a joint closing-strip 19. The strip 19 is preferably formed of a wooden tit loosely between the easement sides when in place and, as 'clearly shown in Fig. 6, the closing-strip has its side edges dressed to produce an integral ogee molding on each edge. The width of the closing-strip is greater than the distance between its pivot-point and the inner face of the lower sash with which it is designed to contact, and the upper or outer edge of the molding is so arranged as to lit under the lower edge ot' the windowsash and form a close joint. iQn the fiat side of the strip 19 hinges 2O are secured, one leaf of each hinge being affixed tothe window-sill portion 10a that projects inwardly from the easement 10, so that the closing-strip will lie fiat on the sill portion when it is adjusted, as represented in Fig. 6.

When the window-sashes are to be adjusted to lower the upper sash 12 and at the same time close the opening thus produced below the lower sash 11, the closing-strip 19 is raised into a perpendicular position, as is indicated by dotted lines in Fig 6, or it may be slightly inclined outward, so that the upper molded edge of the strip will engage with the lower edge of the window-sash 11 and close the joint between said parts. y

It will be seen 'that the ogee form of the molded edges will render the strip 20 ornamental, and when it is in lowered adjustment the dust that may rest on the strip can be readily removed, there being no sharp corners for the lodgment of dirt or dust. The means employed for supporting the pulleys 17 is of the simplest and least expensive construction, since said means comprises but three parts, the L'shaped bracket-piece 1S and the two screws 181? and 18C.

Having thus described our invention, we claim as new and desire to secure by Letters Patentl The combination, of a window casing having vertical guideways, a sash movably mounted in theguidways and a closing strip hinged at its inner edge to the inner part of the sill of the casing and adapted to lie dat against said sill when folded outwardly, said strip having aV width greater than the distance between its hinge-pivots andthe front face of the sash and being adapted to be folded in an inclined position against said front face of the sash, substantially as set forth.

LORENZO yA, MURPHY.

v ALEXANDER H. MILNE.

Vitnesses:

THEO. BRYANT,

board cut to a proper length, so that it will NELSON G. FOSTER.

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